Hoya 72mm PRO-1 Digital ND64 Filter: The Hoya
72mm Pro1 Digital ND64 Filter is a dark neutral density filter with a factor of
64, giving a 6-stop light reduction. This is a great filter for reducing shutter
speeds to capture motion such as in water, foliage or people. For example, in
bright daylight the slowest shutter speed possible without a filter could be
1/60 sec at f/22. By adding the Hoya Pro1 ND64 neutral density filter, the 6
stop reduction in light means a shutter speed of 1 sec would be possible.
Another use of the ND64 would be controlling depth of field.

Features -Hoya
72mm PRO-1 Digital ND64 Filter

Digital Multi-Coated to combat flare and ghosting.

Black Almite Frame with satin finish to reduce
reflections.

Low Profile Frame with satin finish to reduce
reflections.

Black Rimmed Glass to reduce the possibility of light
reflection off the edge.